I found a solution. Please read an issue on github 
http://github.com/Empact/roxml/issues#issue/15
Pavel

Aaron Patterson wrote:
> On Mon, Nov 16, 2009 at 11:37:45AM +0900, Pavel Strnad wrote:
>   
>> Hello,
>> I am facing a problem with ROXML. National characters are not well
>> generated on output. Maybe some problem with encoding. Can you help
>> me?
>> Output looks like this:
>> <result>
>> <status>0</status>
>> <msg>lut kĄ±</msg>
>> <errors/>
>> </result>
>>
>> Correct output should be:
>> <result>
>> <status>0</status>
>> <msg>lut k</msg>
>> <errors/>
>> </result>
>>     
>
> Can you provide some sample code that reproduces this problem?
>
>   


-- 
Ing. Pavel Strnad

PhD. student
Department of computer science, FEE, CTU, Prague
Tel: (+420) 606 469 136
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